比較Drools規則中HashMap中存在的兩個相同的對象值

Question

包含鍵和值的屬性類：

public class Attribute {

    private String key;
    private String value;
//setter and getter method
}     

主班

public class DroolsMain {

    public static HashMap<String , Attribute> hashMapAttribute = new HashMap<String , Attribute>();
    public static void main(String[] args) throws DroolsParserException, IOException {
        String Keys[] = {"From" , "To" , "Subject" };
String attributesValues[] = { "Sathish" ,"aranjan" , "email" };   
       for(int i =0;i<Keys.length;i++)
        {
            Attribute attribute = new Attribute();
            attribute.setKey(Keys[i]);
            attribute.setValue(attributesValues[i]);
            hashMapAttribute.put("" + i, attribute);
        }    
//...
workingMemory.insert(hashMapAttribute);
   }
}     

在rule.drl文件中，我想將一個對象的鍵值與HashMap中存在的另一種相似類型的對象進行比較。

rule.drl

rule "Rule 1:" 

   when 
        $mapAttribute : Map()
        $entry : Entry() from $mapAttribute.entrySet()
        $attribute : Attribute() from $entry.getValue() 
        $attribute1 : Attribute(this != $attribute) from $entry.getValue() 
        Boolean(booleanValue == true) from (($attribute.getKey contains("From") && $attribute.getValue contains("Sathish")) && ($attribute1.getKey contains("Subject") && $attribute1.getValue contains("email")))

     then
        System.out.println("Rule 1 run successfully ");     
    end     

我如何比較兩個對象的值。 請幫助我找到解決方案。

Answer 1

我從更改rule.drl文件中獲得了解決方案：

rule "Rule 1:" 

   when 
        $mapAttribute : Map()
        $entry : Entry() from $mapAttribute.entrySet()
        $attribute : Attribute() from $entry.getValue() 
        $mapAttribute1 : Map()
        $entry1 : Entry() from $mapAttribute1.entrySet()
        $attribute1 : Attribute() from $entry1.getValue() 
        Boolean(booleanValue == true) from (($attribute.getKey contains("From") && $attribute.getValue contains("Sathish")) && ($attribute1.getKey contains("Subject") && $attribute1.getValue contains("email")))

     then
        System.out.println("Rule 1 run successfully ");

    end